Horseshoe



(No Model.)

0. E. BROWN.

HORSESHOE.

No 524,055. I Patented Aug. 7, 1894.

F033 d .f .4 v 4 UNITED STATES PATE T 'OFFIGYEQV OSCAR E. BROWN,OF'BUFFALO, NEW YORK.

HORSESHOE.

SPECIFICATION forming part of Letters Patent No. 524,055, dated August'7, 1894, Appl cation filed October 28, 1893. Serial No. 489,338- (Nomodel.)

To aZZ whom it may concern: I

Be it known that I, OSCAR E. BROWN, a citizen of the United States,residing at the city of Buffalo, in the county of Erie and State of NewYork, have invented a new and useful Improvement in Horseshoes,of whichthe following is a specification.

This invention relates to horse-shoes in which the calks are detachable,so that they may be removed for sharpening them when dull, or berenewed, when worn out.

My invention has for its object to provide a simple fastening whichreliably secures the calks to the body of the horse-shoe and whichpermits the calks to be readily removed.

In the accompanying drawings, Figure l is a bottom plan view of ahorseshoe containing my invention. Fig. 2 is a side elevation thereof.Fig. 3 is a vertical longitudinal section of the horseshoe through oneof the heel calks, showing the locking catch engaged with the calk. Fig.4 is a similar view, showing the catch unlocked, or in the position inwhich it permits the calks to be removed. Fig. 5 is a vertical crosssection in line 5-5, Fig. 3. Fig. 6 is a bottom plan view of the toeportion of the horseshoe with the toe calk removed. I

Like letters of reference refer to like-parts in the several figures.

A is the body of the horseshoe having the usual nail holes a.

B represents the removable toe calk and O O the removable heel calks.Each heel calk is provided in its upperportion with a longitudinalgroove or socket b which receives the adjacent heel portion of thehorseshoe, the socket being undercut or dovetailed in cross section andthe heel portion of the horseshoe being correspondingly shaped, so as tohold the calk against downward movement on the shoe. This socket and thecontiguous portion of the horseshoe are preferably tapered lengthwise,as indicated by dotted lines in Fig. 1, so that the calk is wedged uponthe heel of the horseshoe.

On the under side of each heel portion of the horseshoe is arranged acatch cl which is adapted to interlock with one of a longitudinal seriesof shoulders or ratchet teeth 6 formed in the bottom of the calk socketb, as shown in Figs. 3 and 5. This catch preferably consists of a pawlarranged in a recess or cavity (1' formed in the under side of the heeland is hung with its upper end upon a transverse pin 01 arranged in saidrecess. The pawl is preferably loosely attached to this pin by means ofan open hook which is so bent that when the pawl is in its normalforwardly inclined position shown in the drawings, the hook remains inengagement with the pin d while when the pawl is swung to a baekwardlyinclined position, its hook may be disengaged from the pin. This forms asimple construction which permits the pawl to be readily removed andreplaced by a new one in case it becomes broken. I

f is a spring which is interposed between the lower front side of thepawl and the front wall of the recess d and which tends to press thefree end of the pawl into engagement with the ratchet teeth of the calksocket, so as to lock the calk upon the horseshoe. This springpreferably consists of a block of rubber which is compressed when thepawl is moved out of engagement with said teeth. These teeth arepreferably formed in a longitudinal groove e formed in the bottom of thecalk socket, as most clearly shown in Fig. 5. This groove forms a guidechannel for a rod or key G whereby the free end of the pawl may-belifted clear of the teeth of the calk, as shown in Fig. 4, for releasingthe calk, preparatory to withdrawing or driving it off the shoe.

The rubber block f will remain in its recess merely by frictionalcontact but if desired it may be cemented or otherwise fastened inplace.

In applying a heel calk to the horseshoe, the dovetail socket of thecalk is engaged with the heel of the shoe and firmly wedged upon thelatter. In moving the calk for wardl'y on theheel, the yielding pawl isswung upward by the teeth of the calk and caused to ride over thelatter, until the calk is driven home,-when the rubber block, which hasbeen compressed by the upward movement of the pawl, expands and forcesthe abrupt end ofv the latter into engagement with the front face of theadjacent calk tooth, thereby se curely locking the calk on the horseshoe. When it is desired to remove the calk, the locking pawl isdisengaged from the teeth of the calk by inserting the key or rod Ginthe guide groove 6 whereby the pawl is swung upward clear of the teethand the calk is released, permitting the same to be driven 0d thetaperingheel of the horseshoe by a light blow.

The toe calk is constructed in all respects like the heel calks, but thesides of its socket, instead of embracing the edges of the horseshoe, asin the case of the heel calks, engage with a rib or tenon h of dovetailcross section arranged on the toe portion of the'shoe, as shown in Figs.1 and 2. The under side of this rib is preferably flush with the underside of the horseshoe body and is formed by recessing or cutting awaythe body in the manner shown in the above mentioned figures. The rib istapered to fit the correspondingly shaped socket of the toe calk and isprovided with a cavity 11 for the reception of the lockbody of thehorseshoe, having a recess and a transverse pin arranged in said recess,of a ing pawl and a pivot pin 1 for the pawl, as shown in Fig. 6. Thepawl is held in engagement with the teeth of the calk by a rubber.

block seated in the cavity of the rib and is unlocked in the same manneras the heel calks.

When the rubber blocks lose their elasticity, they are readily renewedat nominal cost.

I claim as my invention-- 1. In ahorse shoe, the combination with thebody of the shoe, of a removable calk having an undercut socket whichengages with a correspondinglyshaped portion of the horse shoe body, atooth or shoulder arranged in said socket, and a movable locking catchor pawl attached to the horse shoe body, projecting into the socket ofthe calk and engaging against the tooth or shoulder in said socket,substantially as set forth.

2. In a horseshoe, the combination with the body of the horseshoe havinga tapering dovetail portion, and a locking catch, of a removable calkhaving a tapering dovetail socket engaging with the correspondingportion of the horseshoe body, and provided in its socket with ratchetteeth with which said catch interlocks, substantially as set 01111.

3. In a horse shoe, the combination with the body of the horseshoehaving a dovetail portion, a pivoted pawl, and a spring bearing againstsaid pawl, of a removable calk having a dovetail socket engaging withthe corresponding portion of the horseshoe body, and provided in itssocket with teeth with which said pawl engages, substantially as setforth. 4. In a horseshoe, the combination with the body of the horseshoehaving a dovetailportion, a pivoted pawl, and a block of rubber bearingagainst said pawl, of a removable calk having a dovetail socket engagingwith the corresponding portion of the horseshoe body, and provided inits socket with teeth with which said pawl engages, substantially as setforth.

5. In a horseshoe, the combination with the removable pawl having a hookengaging with said pin, and a detachable calk having a socket whichreceives the recessed portion of the horseshoe body, and teeth arrangedin said socket with which said pawl engages, f substantially as setforth.

6. In a horseshoe, the combination with the body of the horseshoe havinga tapering dovetail portion and a locking catch, of a detachable calkhaving a tapering dovetail socket engaging with the dovetail portion ofthe horseshoe body, a longitudinal guide groove formed in the bottom ofits socket, a series of ratchet teeth arranged in saidguide groove,

and a spring whereby the locking catch is held in engagement with theteeth of the calk,

f substantially as set forth.

Witness my hand this 23d day of October, 1893.

OSCAR E. BROWN. W'itnesses:

CARL F. GEYER, GHAs. F. BURKHARDT.

